Ten Best SQL Programming Tips To Improve Database Performance
There are several programming tips to improve a database performance. The first tip is to verify that all of the statistics are provided. This means comparing the system catalog and use the tools to see if there are any statistics are missing. The second tip is to promote stage 1 and stage 2 predicates if you can. The company will benefit the most when the products are processed in Stage 1. The third tip is to select only the columns that are needed. Make sure that only the columns that is involved in a certain transaction are selected at one time.
The fourth tip is to select only the rows that are needed. Make sure that you only select the rows that are involved in a certain transaction at one time. The fifth tip is to make sure that the number and date data types match. This is a very important step in Stage 1. The sixth tip is to sequence filtering from most restrictive to least restrictive by table and by predicate type. This means the subsequent predicates will have less data to filter. The seventh tip is to use constants and literals if the values will not change in the next 3 years. The user is required to make a transaction adaptable to any changing variable.
The eight tip is to prune select lists. The user needs to examine a lot of areas in the variables to see if they need to select any of the columns. The ninth tip is to limit the result set with known ends. This means to only select the rows that can be used in the result set. The last tip is to analyze and tune the access paths. The user will need to verify that the access path is appropriate for the required processing